#
#  File        : CMakeLists.txt
#                ( Configuration file for 'cmake' utility )
#
#  Description : CMakeLists.txt configuration file for compiling CImg-based code.
#                This file is a part of the CImg Library project.
#                ( http://cimg.eu )
#
#  Copyright   : Antonio Albiol
#                ( http://personales.upv.es/~aalbiol/ )
#
#  License     : CeCILL v2.0
#                ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html )
#
#  This software is governed by the CeCILL  license under French law and
#  abiding by the rules of distribution of free software.  You can  use,
#  modify and/ or redistribute the software under the terms of the CeCILL
#  license as circulated by CEA, CNRS and INRIA at the following URL
#  "http://www.cecill.info".
#
#  As a counterpart to the access to the source code and  rights to copy,
#  modify and redistribute granted by the license, users are provided only
#  with a limited warranty  and the software's author,  the holder of the
#  economic rights,  and the successive licensors  have only  limited
#  liability.
#
#  In this respect, the user's attention is drawn to the risks associated
#  with loading,  using,  modifying and/or developing or reproducing the
#  software by the user in light of its specific status of free software,
#  that may mean  that it is complicated to manipulate,  and  that  also
#  therefore means  that it is reserved for developers  and  experienced
#  professionals having in-depth computer knowledge. Users are therefore
#  encouraged to load and test the software's suitability as regards their
#  requirements in conditions enabling the security of their systems and/or
#  data to be ensured and,  more generally, to use and operate it in the
#  same conditions as regards security.
#
#  The fact that you are presently reading this means that you have had
#  knowledge of the CeCILL license and that you accept its terms.
#

cmake_minimum_required(VERSION 3.10)


PROJECT(Examples-CIMG)

# Prevent compilation in-source
if( ${CMAKE_BINARY_DIR} STREQUAL ${PROJECT_SOURCE_DIR} )
  Message( " " )
  Message( FATAL_ERROR "Source and build  directories are the same.
 Create an empty build directory,
 change into it and re-invoke cmake")
endif()


# To use PKG_CHECK_MODULES to find some optional packages
find_package(PkgConfig)

#    Tell CMake where to leave executables
SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR})

#Path of CImg.h file relative to this file path
set(CIMG_H_PATH ${PROJECT_SOURCE_DIR}/..)
include_directories( ${PROJECT_SOURCE_DIR} )
include_directories( ${CIMG_H_PATH} )




# ### CIMG related stuff
# Flags to enable fast image display, using the XSHM library.
SET(CIMG_XSHM_CCFLAGS  -Dcimg_use_xshm)

# Flags to enable screen mode switching, using the XRandr library.
SET(CIMG_XRANDR_CCFLAGS  -Dcimg_use_xrandr)

# Flags to enable native support for JPEG image files, using the JPEG library.
# ( http://www.ijg.org/ )
SET(CIMG_JPEG_CCFLAGS  -Dcimg_use_jpeg)

# Flags to enable native support for TIFF image files, using the TIFF library.
# ( http://www.libtiff.org/ )
SET(CIMG_TIFF_CCFLAGS  -Dcimg_use_tiff)

# Flags to enable native support for PNG image files, using the PNG library.
# ( http://www.libpng.org/ )
SET(CIMG_PNG_CCFLAGS  -Dcimg_use_png)

#Flags to enable OPENCV support (Camera)
# ( http://www.opencv.org/ )
SET(CIMG_OPENCV_CCFLAGS-Dcimg_use_opencv)

# Flags to enable native support for EXR image files, using the OpenEXR library.
# ( http://www.openexr.com/ )
SET(CIMG_OPENEXR_CCFLAGS  -Dcimg_use_openexr)

# Flags to enable native support for various video files, using the FFMPEG library.
# ( http://www.ffmpeg.org/ )
SET(CIMG_FFMPEG_CCFLAGS  -Dcimg_use_ffmpeg)

# Flags to enable native support of most classical image file formats, using the Magick++ library.
# ( http://www.imagemagick.org/Magick++/ )
SET(CIMG_MAGICK_CCFLAGS -Dcimg_use_magick)

# Flags to enable faster Discrete Fourier Transform computation, using the FFTW3 library
# ( http://www.fftw.org/ )
SET(CIMG_FFTW3_CCFLAGS  -Dcimg_use_fftw3)

# Flags to enable native support for HEIC image files, using libheif.
# ( https://github.com/strukturag/libheif )
SET(CIMG_HEIC_CCFLAGS  -Dcimg_use_heic)



# ### Search Additional Libraries ##########
FIND_PACKAGE(OpenCV)
FIND_PACKAGE(JPEG)
FIND_PACKAGE(TIFF)
FIND_PACKAGE(PNG)
FIND_PACKAGE(ZLIB)
FIND_PACKAGE(LAPACK)
FIND_PACKAGE(BLAS)

if(PKG_CONFIG_FOUND)
  pkg_check_modules(PC_HEIF libheif QUIET)
endif()

find_path(HEIF_INCLUDE_DIR NAMES libheif/heif_cxx.h
                           PATHS ${PC_HEIF_INCLUDEDIR})
find_library(HEIF_LIBRARY NAMES heif libheif
                          PATHS ${PC_HEIF_LIBDIR})

set(HEIF_VERSION ${PC_HEIF_VERSION})

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(HEIF
                                  REQUIRED_VARS HEIF_LIBRARY HEIF_INCLUDE_DIR
                                  VERSION_VAR HEIF_VERSION)

PKG_CHECK_MODULES(FFTW3 fftw3)
PKG_CHECK_MODULES(OPENEXR OpenEXR)
PKG_CHECK_MODULES(MAGICK Magick++)

# PKG_CHECK_MODULES(LIBAVCODEC libavcodec)
# PKG_CHECK_MODULES(LIBAVFORMAT libavformat)
# PKG_CHECK_MODULES(LIBSWSCALE libswscale)
# PKG_CHECK_MODULES(LIBAVUTIL libavutil)

if(NOT WIN32)
  FIND_PACKAGE(X11)
  FIND_PACKAGE(Threads REQUIRED)
endif()

# #### End of additional libraries search ##########


### Configure Paths according to detected packages
if(TIFF_FOUND)
  get_filename_component(TIFF_LIB_DIRS ${TIFF_LIBRARIES} PATH)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_TIFF_CCFLAGS}")
  link_directories(${TIFF_LIB_DIRS})
  include_directories(${TIFF_INCLUDE_DIR})
  SET(SYSTEM_LIBS ${SYSTEM_LIBS} ${TIFF_LIBRARIES})
endif()



if(JPEG_FOUND)
  get_filename_component(JPEG_LIB_DIRS ${JPEG_LIBRARIES} PATH)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_JPEG_CCFLAGS}")
  link_directories(${JPEG_LIB_DIRS})
  include_directories(${JPEG_INCLUDE_DIR})
  SET(SYSTEM_LIBS ${SYSTEM_LIBS} ${JPEG_LIBRARIES})
endif()




if (ZLIB_FOUND)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_ZLIB_CCFLAGS}")
  link_directories(${ZLIB_LIB_DIRS})
  include_directories(${ZLIB_INCLUDE_DIR})
  SET(SYSTEM_LIBS ${SYSTEM_LIBS} ${ZLIB_LIBRARIES})

  # PNG requires ZLIB
  if(PNG_FOUND)
    SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_PNG_CCFLAGS}")
    link_directories(${PNG_LIB_DIRS})
    include_directories(${PNG_INCLUDE_DIR} )
    SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${PNG_LIBRARIES} )
  endif()
endif()




if(FFTW3_FOUND)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_FFTW3_CCFLAGS}")
  link_directories( ${FFTW3_LIBRARY_DIRS} )
  include_directories( ${FFTW3_INCLUDE_DIRS} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${FFTW3_LIBRARIES} )
endif()




if(OPENEXR_FOUND)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_OPENEXR_CCFLAGS}")
  link_directories( ${OPENEXR_LIBRARY_DIRS} )
  include_directories( ${OPENEXR_INCLUDE_DIRS} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${OPENEXR_LIBRARIES} )
endif()


if(MAGICK_FOUND)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_MAGICK_CCFLAGS}")
  link_directories( ${MAGICK_LIBRARY_DIRS} )
  include_directories( ${MAGICK_INCLUDE_DIRS} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${MAGICK_LIBRARIES} )
endif()

if(HEIF_FOUND)
  get_filename_component(HEIF_LIB_DIRS ${HEIF_LIBRARY} PATH)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_HEIC_CCFLAGS}")
  link_directories( ${HEIF_LIB_DIRS} )
  include_directories( ${HEIF_INCLUDE_DIRS} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${HEIF_LIBRARY} )
endif()


if( LIBAVCODEC_FOUND  AND LIBAVFORMAT_FOUND AND LIBSWSCALE_FOUND AND LIBAVUTIL_FOUND )
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_FFMPEG_CCFLAGS}")
  link_directories( ${LIBAVFORMAT_LIBRARY_DIRS} )
  link_directories( ${LIBAVCODEC_LIBRARY_DIRS} )
  link_directories( ${LIBSWSCALE_LIBRARY_DIRS} )
  link_directories( ${LIBAVUTIL_LIBRARY_DIRS} )
  include_directories( ${LIBAVFORMAT_INCLUDE_DIRS} ${LIBAVFORMAT_INCLUDE_DIRS}/libavformat)
  include_directories( ${LIBAVCODEC_INCLUDE_DIRS} ${LIBAVCODEC_INCLUDE_DIRS}/libavcodec )
  include_directories( ${LIBSWSCALE_INCLUDE_DIRS} ${LIBSWSCALE_INCLUDE_DIRS}/libswscale)
  include_directories( ${LIBAVUTIL_INCLUDE_DIRS} ${LIBAVUTIL_INCLUDE_DIRS}/libavutil )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${LIBAVFORMAT_LIBRARIES} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${LIBAVCODEC_LIBRARIES} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${LIBSWSCALE_LIBRARIES} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${LIBAVUTIL_LIBRARIES} )
endif()


if(NOT APPLE)
  if(NOT WIN32)
    if(X11_FOUND)
      SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_XSHM_CCFLAGS} ${CIMG_XRANDR_CCFLAGS}")
      SET(SYSTEM_LIBS ${SYSTEM_LIBS} Xext Xrandr)
    endif()
  endif(NOT WIN32)
endif(NOT APPLE)

if(X11_FOUND)
  link_directories(${X11_LIB_DIRS})
  include_directories(${X11_INCLUDE_DIR})
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${X11_LIBRARIES} )
endif()

if (NOT WIN32)
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${CMAKE_THREAD_LIBS_INIT} )
endif()

if( WIN32)
  SET( SYSTEM_LIBS  ${SYSTEM_LIBS}  gdi32 )
endif()

if (OpenCV_FOUND)
  message("OpenCV Found")
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_OPENCV_CCFLAGS}")
  include_directories(${OpenCV_INCLUDE_DIRS})
  link_directories(${OpenCV_LIB_DIRS})
  SET( SYSTEM_LIBS  ${SYSTEM_LIBS}  ${OpenCV_LIBS} )
endif()



if(LAPACK_FOUND)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_LAPACK_CCFLAGS}")
  link_directories( ${LAPACK_LIBRARY_DIRS} )
  include_directories( ${LAPACK_INCLUDE_DIRS} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${LAPACK_LIBRARIES} )
endif()

if(BLAS_FOUND)
  SET(CIMG_CFLAGS "${CIMG_CFLAGS} ${CIMG_BLAS_CCFLAGS}")
  link_directories( ${BLAS_LIBRARY_DIRS} )
  include_directories( ${BLAS_INCLUDE_DIRS} )
  SET( SYSTEM_LIBS ${SYSTEM_LIBS} ${BLAS_LIBRARIES} )
endif()


# Add CIMG Flags to Compilation Flags
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CIMG_CFLAGS}")


SET(CIMG_FILES CImg_demo
  captcha
  curve_editor2d
  dtmri_view3d
  edge_explorer2d
  fade_images
  gaussian_fit1d
  generate_loop_macros
  hough_transform2d
  image_registration2d
  image2ascii
  image_surface3d
  jawbreaker
  mcf_levelsets2d
  mcf_levelsets3d
  odykill
  pde_heatflow2d
  pde_TschumperleDeriche2d
  plotter1d
  radon_transform2d
  scene3d
  spherical_function3d
  tetris
  tron
  tutorial
  wavelet_atrous
  use_draw_gradient
  use_nlmeans
  use_skeleton
  use_RGBclass
  )

foreach(program ${CIMG_FILES})
  add_executable(${program} ${program}.cpp)
  target_link_libraries(${program} ${SYSTEM_LIBS} )
endforeach(program)
